An individual who prefers to betray the trust of his "boys" or of his "people" resulting from a lack of identity of who he/she really is.

A snitch doesn't finish a blunt
A snitch doesn't admit the true history of his ancestry
A snitch Shoots a basketball as if he were setting a volleyball
A snitch sleeps a lot instead of participating in educational,athletic, or social activities
A snitch admires Tom Brady and vampires

in the criminal sense a snitch will provide information to the police or feds in order to obtain lenient treatment for themselves and provide information over an extended period of time in return for money or for police to overlook their own criminal activities. Quite often someone will become an informant following their arrest.

a snitch is not the innocent person who has a serial killer living next door so he tells the police to get the trash out the community. a snitch is one who is slanging dope or doing some other wrong doing and gets caught but instead of taking their punishment like a man they tell the authorities info on other criminals so they can get off scott free or reduce their own punishment. that is a snitch!